Solutions to LeetCode Problems # Title 1 Two Sum 2 Add Two Numbers 3 Longest Substring Without Repeating Characters 7 Reverse Integer 8 String to Integer (atoi) 9 Palindrome Number 13 Roman to Integer 14 Longest Common Prefix 20 Valid Parentheses 26 Remove Duplicates from Sorted Array 27 Remove Element 28 Find the Index of the First Occurrence in a String 58 Length of Last Word 66 Plus One 69 Sqrt(x) 70 Climbing Stairs 83 Remove Duplicates from Sorted List 94 Binary Tree Inorder Traversal 144 Binary Tree Preorder Traversal 145 Binary Tree Postorder Traversal 169 Majority Element 226 Invert Binary Tree 392 Is Subsequence 485 Max Consecutive Ones 876 Middle of the Linked List 938 Range Sum of BST 973 K Closest Points to Origin 977 Squares of a Sorted Array 979 Distribute Coins in Binary Tree 1089 Duplicate Zeros 1108 Defanging an IP Address 1207 Unique Number of Occurrences 1295 Find Numbers with Even Number of Digits 1480 Running Sum of 1d Array 1672 Richest Customer Wealth 1704 Determine if String Halves Are Alike 1741 Find Total Time Spent by Each Employee 1757 Recyclable and Low Fat Products 1920 Build Array from Permutation 1929 Concatenation of Array 2225 Find Players With Zero or One Losses 2235 Add Two Integers 2396 Strictly Palindromic Number 2469 Convert the Temperature Problems solved: 44